Soeap sheet metal



(No Model.) 3 Sheets-Sheet 1.

O. M. PLATT. MACHINE FOR FEEDING AND PUNGHING SCRAP SHEET METAL. No.366,247. Patented July 12, 1887.

WITNESSES: l/VVE/VTOH ATTORNEY (No Model.) 3 SheetsSh eet 2.

0. M. PLATT. v MACHINE FOR FEEDING AND 'PUNGHING SCRAP SHEET METAL. No.366,247. Patented'July 12, 1887.

B V A ATTORNEY N PETERS. P hnlo-Lilhngnpher, Washinginn b. c.

(No Model.) 3 Sheets-Sheet 3.

0. M. PLATT. MAOHINEFOE FEEDING AND PUNGHING SCRAP SHEET METAL. No.366,247. Patented July 12, 1887.

III/ VE IV TOR ATTORNEY WITNESSES:

N. PETERSuPhMo-Limognphm; Washingwn. D. C.

UNITED STATES PATENT OFFICE.

CLARK M. PLATT, OF WATERBURY, CONNECTICUT, ASSIGNOR TO THE PLATTBROTHERS 8t COMPANY, OF SAME PLACE.

MACHINE FOR FEEDING AND PUNCHING SCRAP SHEET METAL.

SPECIFICATION forming part of Letters Patent No. 366,247, dated July 12,18187.

Application filed May 25, 1886. Serial No. 203,192. (No model.)

To all whom, it may concern."

Be it known that I, CLARKlW. PLA'IT, of Waterbury, in the county of NewHaven and State of Connecticut, have invented a certain new and usefulImprovement in Machines for Feeding and Punching Scrap Sheet Metal, ofwhich I declare the following to be a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart of this specification.

This invention relates to an improvement in machines for cuttingbutton-blanks from irregularlyshaped scrap metal; and the inventionconsists in the machine for feeding and cutting blanks fromirregularly-shaped scrap metal, hereinafter particularly shown,described, and claimed.

In the accompanying sheet of drawings, Figure 1 is a plan view, partlyin section, of my blank-cutting machine. Fig. 2 is a side elevation ofthe same, partly in section; Fig.3, an end viewof same, partly insection; and Fig. at, a side view showing detail of clamping device.

. Similar letters ofreference indicate like parts in the severalfigures.

The machine which forms the subject-mattor of my present application isa modification of a machine for feeding and cutting button-blanks fromirregular scrap sheet metal patented to me January 12, 1886, andnumbored 334,190 that is, the present invention relates to a machinedesigned to feed and cut button-blanks expeditiously and with economyfrom the scrap metal as it is found irregularly shaped in the openmarket. The irregular shape in which these scraps are obtained has beenan obstacle to their economical use for the purpose named, because ofthe drawings, Fig. 1, a plan View, represents a drum, A, of metal orother substance. This drum is keyed to an arbor, c, which is journaledin a bed-plate, 13. also fixed a gear-wheel, C. This geanwheel ispractically a ratchet-wheel, engaging into the ratchets of which is apawl, b. This pawl is connected with a sliding block,c, into which isfixed a stud, d, thestud being received in a slot, 0, in the lower endof a pivoted lever, D, the upper end of the lever being likewiseslotted, as at f, to receive a wrist-pin, g, fixed to a cam-wheel, h,secured to one end of a driving-shaft, E. Also journaled to the bedplateB by an arbor, i, isa drum, F. In the peripheries of the drums 'A and Fare set at intervals protruding studsj.

Encircling in part the drums A and F is an endless metal band, G, withopenings therein at intervals to receive the studs j. To this band Cr,and at as many places as may be required, are fixed brackets H, and tothese brackets are secured clamps J, consisting of two pivoted aws. Theupper jaw, at its rear end, has pivoted to. it a cam, k, and anoperating-bar, Z. This cam has one part of its periphery slabbed off, asat m. To the frame of the machine are journaled asystem of levers, n and0, suitably connected with the driving-shaft E, the lever n terminatingat its outer end in a vertical striker, p. This striker passes outthrough the bed-plate B, and is arranged to have an up-and-down movementthrough the same. Fixed to the bed-plate 13, at suitable places, areguide-blocks r, through which pass the brackets H as they are carriedaround by the band G, to which they are attached. These guide- To thisarbor c is means of a link, t, and the driving-shaft E.

The lower end of this reciprocating block may be provided with a gang ofpunches suitably arranged for the work to be performed. The particularconstruction of the punching appalCO ratus need not be detailed, sinceany suitable punch may be employed with my device.

Now, the machine having the foregoing described mechanism is operated byimparting motion through the drivingshaft E in any desirable manner,causing the cam-wheel h to revolve, and through the wrist-pin g in theslot f, giving a rocking motion to the pivoted lever D, which in turn,through its slot 6 and the stud d, causes the block 0 to reciprocateinits slideway, and, as it reciprocates it causes an intermittentthrusting motion to actuate the pawl 11, and as this pawl engages withthe ratchets in the wheel 0, that wheel is made to revolve and with itthe arbor a, carrying around in this way the drum A keyed to it, and asthis drum turns, the endless band G is necessarily forced to travel withit, because of the studs j interlocking therein, and because of itsfriction around the drum, and as the band G is so forced to travel itconveys motion to the drum F, through its studsj and through friction,so that both drums A and F and the band G are set in motion, the drumsrevolving and the band G traveling from one drum to the other in adirection parallel to the bedplate B. Now, as this band in this waytravels, it carries with it the brackets H and the clamps Jfixedthereon, and when these clamps are successively brought with theirjaws open opposite to certain brackets, as at M, the scrap metal 3 isinserted within the jaws of the clamps, the bracket M acting as a tableand guide for that purpose, and as soon as the scrap is inserted withinthe jaws of the clamp, the striker p, th rough its operating-levers nand 0, operates the bar Z, which causes the cam It to close the jaws ofthe clamp J and clamp the scrap metal within them. The scrap, being nowfirmly grasped by the clamp, is carried around by the band G beneath thepunches w, which punch out the blanks as the scrap is fed beneath them,the punched scrap, still in the clamp J, continuing itstravels with theband G until the end of the bar Z is brought in contact with thetrip-plate s, which operation moves the slot part m of the cam kdownward, andso opens thejaws of the clamp J, releasing the punchedscrap from them, and leaving them open to receive the next piece ofscrap metal, when the clamp shall again come opposite the bracket M,there to be operated as before depunched; and there may be as many ofthese clamps as convenience may require.

From the foregoing it must be apparent that it is immaterial what theshape of the scrap metal may be, since, as is obvious, the clamps willgrasp scraps of any. shape and feed them to the punches with equalfacility.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a machine for feeding and punching scrap metal, in combination, aseries of clamping devices, an endless band and mechanism for operatingthe same, and a punching-machine.

2. In a machine for feeding and punching scrap metal, in combination, anendless band and mechanism for imparting motion to the same, a series ofclamps fixed to said band, and devices for closing and opening saidclamps, and a punchingmachine.

3. In a machine for feeding and punching scrap metal, in combination, anendless band encircling revolving drums A andF, agear .or.

ratchet wheel, 0, and pawl b, as and for the purpose described.

4. In a machine for feeding and punching scrap metal, in combination, anendless band, revolving drums A and F, clamps J, fixed to said band,cams k, pivoted to said clamps, bar Z, striker p and its operatingmechanism, and a tripping-plate, s, as and for the purpose described.

5. In a machine for feeding and punching scrap metal, in combination, anendless band carrying clamps J and mechanism for operating said band andsaid clamps, and supporting feeding-brackets M, as and for the purposedescribed.

6. In a machine for feeding and punching scrap metal, in combination, anendless band and mechanism for imparting motion to the same, a series ofclamps fixed to said band, and brackets H, as and for the purposedescribed.

CLARK I M. PLA'IT.

In presence of- G. M. PLYMPTON, D. A. CARPENTER.

